Covering for pipes



(No Model.)

H. M. HANMORE. COVERING FOR PIPE-s. No. 432,162.

Patented July 15, 1890.

UNITED STATES PATENT OFFICE.

IIIRAM M. I'IANMORE, OF SANTA CRUZ, CALIFORNIA.

COVERING FOR PIPES.

SPECIFICATION forming part of Letters Patent No. 432,162, dated July 15,1890.

I Application filed March 4, 1890. Serial No. 342,575- (No model.)

To all whom it may concern;

Be it known that I, I-IIRAM M. I'IANMORE, of

Santa Cruz, in the county of Santa Cruz and State of California, haveinvented a certain new and useful Improvement in Coverings for Pipes,&c., of which the following is a specification.

My improvement relates to coverings for pipes, boilers, and otherarticles which are employed as non-conductors of heat.

I Will describe a covering embodying improvement in detail, and thenpoint the novel features in the claim.

In the accompanying drawings, Figure 1 is a perspective view of aportion of a covering embodying my improvement. Fig. 2 is a similar Viewshowing the method of applying the covering to a pipe.

Similar letters of reference designate corresponding parts in bothfigures.

In making my covering I take so-called fossil-meal, which consistsprincipally of silicate skeletons of the peat-plant and chalk, andpreferably wash it to remove the chalk, or a large portion thereof.\Vith the fossilmeal I mix carbonate of magnesia and water,

my out thoroughly stirring the same and adding a fiber, Which may be ofany suitable kind, either mineral, animal, or vegetable-such, forinstance, as cotton, jute, hair, or asbestus. \Vhen the fiber has beenthoroughly mixed with the fossil-meal and carbonate of magnesia, I moldthe mass into suitable forms for the purpose required. The forms arethen dried. After being dried they are smoothed down by any convenientmeans, so as to present even and true edges and surfaces.

In the example of my improvement shown the covering is formed intosemicircular sections A, one of the ends of which is provided withangularly-extending or bevel portions (1, while the other ends areprovided with undercut or beveled surfaces (4. hen the sections of thecovering are placed together about a pipe B, the bevel portion a upon asection will extend into and contact with the undercut or bevel surfacea upon the next adjacent section. Then the sections have been placedabout a pipe, they may be secured in position by means of a strap O,passing about their exteriors, or otherwise, as desired.

A pipe or boiler covering made according to my improvement is hard andfirm and presents sharp edges, which admit of the sections being fittedtightly together, thus preventing loss of heat between the joints. Itmay be IIIRAM M. I-IANMORE. Witnesses:

F. W. MAKINNEY, H. E. MAKINNEY.

